Sea Urchin Embryology Back to Contents page

 

 

 

[ANIMATIONS][PATH][FERTILIZATION]

ACROSOME REACTION

The red receptors on the sperm come into contact with the egg jelly, yellow. This induces the acrosome reaction causing the acrosome in green to fuse with the plasma membrane of the sperm. The actin in pink goes from a globular state to a filamentous state pushing the front of the sperm outward exposing the binding receptors, blue. The binding receptors can now bind with the egg
Windows: Right click on animation and choose save to file

Macintosh: Hold click on animation and choose save to file

© 1997 Chris Patton
Stanford University